Thermo Plastic Polymers Flashcards
What are polymers made from
Monomers
Do Polymer chains have cross links?
No, that’s Thermo-setting Polymers
Name three Thermoplastics…
ABS,
PET,
PMMA (acrylic)
Polypropylene,
High Impact Polystyrene,
Expanded Polystyrene,
Low Density Polystyrene,
High Density Polystyrene,
Nylon,
UPVC
What are most synthetics made from?
Oil
Are Thermoplastics recyclable?
Yes, but they take 100+ years to degrade naturally
What is the symbol for Thermoplastics?
5 PP
Name another Thermoplastic…
ABS,
PET,
PMMA (acrylic),
Polypropylene,
High Impact Polystyrene,
Expanded Polystyrene,
Low Density Polystyrene,
High Density Polystyrene,
Nylon,
UPVC
What are the properties of all Thermoplastics?
Remouldable, Recyclable, Self coloured, Self finishing,
What are the properties of ABS (***)
ABS is hard and durable,
ABS is shiny and multicoloured,
ABS is very versatile,
However ABS is very expensive
Name an use of ABS…
High quality toys,
Mobile phones,
Safety helmets,
What are the properties of PET (*) ?
PET can come clear/multicoloured,
PET has a crinkly (cheap) feel,
PET is very strong despite thinness,
Where might you find something made of PET?
At a supermarket/food outlet.
PET is mainly used for bottles/food containers
What are the properties of Polypropylene (***) ?
Polypropylene is soft and supple,
Polypropylene is tough and durable (has a longlife)
Polypropylene is very expenisve
Polypropylene is the only plastic that can form an integeral hinge
Polypropylene is colourful
What are the uses of Polypropylene?
Sandwich boxes and school chairs
What is an integeral hinge?
You can crush the plastic and its bends
Name the properties of LDPE (***) …
LDPE can be made very thin (0.1mm)
LDPE is clearish/coloured
LDPE is disposable
Where could you find LDPE?
In a shop, LDPE is commonly used for carrier bags.
LDPE can also be used for toothpaste tubes
What are the properties of Polystyrene? (**)
Poylstyrene is crinkly
Poylstyrene is easy to manufacture
Poylstyrene is very cheap
What are the commercial uses of Poylstyrene?
Yoghurt pots; disposable food containers
What are the properties of PMMA?
PMMA is also known as acrylic
PMMA comes in every colour
PMMA is optically clearer than glass
PMMA has a high quality feel and high shine finish
PMMA is very Strong
HOWEVER PMMA SCRATCHES
What is Acrylic used for?
Head light lens and shop signs
What are the properties of HIP?
High Impact Polystyrene has a low melting temperaure (95^)
High Impact Polystyrene is to easy mold,
High Impact Polystyrene is light and strong
What is High Impact Polystyrene used for?
(Cheap) toys
Name the properties of Expanded Polystyrene…
Expanded Polystyrene is light (80% air)
Expanded Polystyrene is buyant
